. >>> mahmoud ahmadinejad is stirring up controversy, implying america may have had a hand in the 9/11 attacks and made those remarks as he addressed the u.n. general assembly yesterday and eric shawn got an exclusive one-on- one interview where he pressed the leader for answers. >> you have insulted millions and millions of americans by claiming the u.s. government had a hand in 9/11. quite frankly, sir, how could you say such an insane and nutty thing? >> would you address your own president the same way? >> president ahmadinejad was not happy with the way the interview started and claimed the statement about 9/11 is one of 32 theoryies on the attacks. >> [ through translator ] >> you believe that the government had a hand in 9/11? [ through translator ] >> i did not give an opinion of my own. i suggested that a fact-finding group and meg be formed to delve into the truth. >> reporter: osama bin laden has taken credit, al qaeda officials have taken credit and it seems very clear. >> that is fine and the fact- finding mission can shed light on who the perpetrators were, who is alibi a